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No. 224,331. Patented Feb. 1o, 18am U ,ef

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UNITED STATES PATENT OFFICE.

j JAMES E. GELLETLY, oE BALTIMORE, MARYLAND;

. PUMP.

SPECIFICATION 'frming part To all whom it ma/y concern:

Be it known that I, JAMEs F. GELLETLY, of Baltimore city, State of Maryland, have invented certain new and useful Improvements in Pumps; and I hereby declare the same to be fully, clearly, and exactly describedas follows, reference being had to the accompanying drawings, in whichl Figure l is a perspective view of the device; vIo Fig. 2, a projection of the cam; Fig.3, aplan of the base; Fig. 4, a similar view of themdisk carrying the rotating pistons; and Fig. 5 is a vertical central sectional View ofthe device.V v The object of my invention is to furnisha I5 simple and effective -continuous discharge pump, not liable to get out of order, and, being devoid of packing and valves, adapted to force a stream of liquid in either direction. In the accompanying drawings, A A represent them ain casin g, in the upper part of which is secured a cylinder, B, having a cam-race, b, as shown. Through the center of this cylinder passes a shaft, E, which is firmly secured to a disk, I, that is adapted, by means of the crank e and handle e,'to be rotated within the cylindrical part of the casing A. i Through stuffingboxes D in the disk I pass' rods o,Y carrying at their lower ends the pistons fi. 'Ihe upper ends of the rods are secured in disks C by 5o means ofv screws c', and pins on the inside of these disks engage with the cam-race b. The casing A ts down around a Ilan ge, a', on the cylinder A', the two being secured together by bolts passing through lugs ai? The center! postfinthecasingA'itscloselyagainstthedisk I when the parts are brought together, the pin Gentering ahole, G', in the disk, and serving as a pivot for the latter. A bridge, g, of equal height with the post j' and ange a', connects them, and of course also fits closely against the disk I. On either side of the bridge is an opening, F H, serving, respectively, as inlet and outlet ducts for the liquid. Both are provided with threaded nozzles F for the attachment of. a hose. f

'It will be seen that as the crank is revolved the disk I is caused to turn within the cylinder or casing A, carrying with it the pistons t'. The cam-race is so arranged with reference to 5o the bridge g that its highest portion, m, is diof Letters Patent No. 224,331, dated February 10, 1880, Application filed November 4, 1879.

rectly thereover, so that the pistons are lifted by means of the pins on the disks C andthe rods c as they approach the bridge, and rey tained in theirlifted position until they pass it, when' they are caused to descend by the 5 5 `same means and traverse the annular channel between the post f and iiange a', which channel theyare made of a size to exactly t.

At each rotation of the shaft E a volume of water is forced through the outlet H equal to 6o the cubical contents of the channel, the device operating, in this respect, somewhat upon the principle of the ordinary chain-pump, Without being open to the disadvantages of the latter in point of waste and wear.

From the foregoing description `of the device it will be seen that thepump works equally well in either direction-apoint which is of importance, or becomes of importance as the cam-race wears away, because upon reversing 7" the motion of the pump the opposite face of the race actuates the pins.

vAs the pistons are made to revolve close to the walls of the channel, the onlyparts of the device upon which any wear whateverfalls are the 7 5 race and pins on the disks C and the stuffingboxes D. The Wear on the race may, as above described, be transferred to the opposite face, with which thepins, in revolving with the shaft in one direction, have never come in contact, 8o and upon taking out the screws c' the disks C may be inverted, bringing new surfaces of the pin into contact with the race. Finally, wear of the boxes D may be taken up by slightly turning them, they being in the form of ex- Vternally-threaded split sleeves.

The simplicity ofthe device, the facility it. aods for taking up wear, and its thorough efficiency in use eminently fit it for any pur pose -forwhich it is desired to lift and force 9o vsubstantially as described.

2. In a pump, an annular barrel having a bridge or -partition and a seriesof pistons arranged to travel around in said barrel and be Ioo lifted and depressed as they approach and recede from the bridge by means of a cani-race, with which pins projecting from the pistonshafts engage, as set forth.

3. In combination with the casing A', having annular channel, and bridge g, the vertically-reciprocating pistons and disk I, substantially as described.

4. In combination with the casings A A', cylinder B, having cam-race b, the annular barrel or channel, and pistons z', having reversible disks C, substantially as set forth.

5. The combination, in a pump, of a revolving disk carryingrcciprocating pistons adap ted to travel in a bridged annulaibarrel, and a stationary cam-race adapted to lift the pistons, whereby the pump is adapted to force liquid in either direction, and facility is afforded, as described, for taking up wear, substantially as set forth.

JAMES F. GELLETLY.

Witnesses:

It. D. WILLIAMS, JOHN C. GITTINGER. 

